#2831AB#2831AB

#2831AB is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.9% C 0.190 H 270.9°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#2831AB
RGB	rgb(40, 49, 171)
HSL	hsl(236, 62%, 41%)
HSV	hsv(236, 77%, 67%)
CMYK	cmyk(76.6%, 71.3%, 0%, 32.9%)
CIE-LAB	lab(28.35, 39.43, -65.71)
CIE-LCH	lch(28.35, 76.63, 300.97°)
OKLab	oklab(39.86% 0.003 -0.1902)
OKLCH	oklch(39.86% 0.19 270.9)
XYZ	xyz(9.3216, 5.5870, 39.1073)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2831AB #ABA228

analogous

#2873AB #2831AB #6128AB

triadic

#2831AB #AB2831 #31AB28

tetradic

#2831AB #AB2873 #ABA228 #28AB61

square

#2831AB #AB2873 #ABA228 #28AB61

split-complementary

#2831AB #AB6128 #73AB28

monochromatic

#111548 #1C2379 #2831AB #3E48D2 #7077DE

Accessibility & contrast

On white

9.92

#2831AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#2831AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2831AB

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2831AB	#FFFFFF	#000000	##FFFFFF
##2831AB	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049AF

Deuteranopia (green-blind)

#003CA9

Tritanopia (blue-blind)

#00536A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2831ab;
/* rgb */ color: rgb(40, 49, 171);
/* oklch */ color: oklch(39.9% 0.190 270.9);

Tailwind

colors: {
  custom: {
    50: '#786ac5',
    500: '#2831ab',
    950: '#000000',
  },
}

SCSS

$custom: #2831ab;
$custom-light: #786ac5;
$custom-dark: #000000;

JSON

{
  "hex": "#2831ab",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 171
  },
  "hsl": {
    "h": 235.878,
    "s": 62.085,
    "l": 41.373
  },
  "oklch": {
    "l": 0.3986,
    "c": 0.19023,
    "h": 270.9
  },
  "luminance": 0.05588
}

Semantic roles & 50–950 ramp

primary

#2831AB

secondary

#C4BE6A

accent

#DA43E5

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #2831AB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →